Electric light guard



Oct. 6, 1936. R. A. FENZL ELECTRIC LIGHT GUARD Filed Oct. 1, 1954Patented Oct. 6, 1936 UNITED STATES PATENT OFFICE ELECTRIC LIGHT GUARDRudolph A. Fenzl, Houston, Tex.

Application October 1, 1934, Serial No. 746,368

2 Claims. (01. 240-112) This invention relates to an electric light theouter end of the sleeve around the wiring to guard. form a gas-tightjoint.

An object of the invention is to provide a guard The globe 3 and theelectrical connections will of the character described having a socketto all thus be enclosed in a gas-tight compartment 5 receive aconventional electric light globe, and by the shield 5 and the hood l2,and the stuiling provided with means for shielding the globe and box itso that when the light is used in oil tanks, the electrical connectionsto exclude gas thereor oil tank cars, or'at other places where therefrom when the electric light is used in the presis explosive gas, orexplosives, the explosive will ence of an explosive gas. be excludedfrom all electrical connections which When so shielded and protected,the light may would be liable to create a spark and cause an 10 besafely used in oil tanks, and tank cars, when explosion. it is necessaryto inspect, or repair, the interior If desired, the guard may beequipped with a thereof without danger of explosion, U-shaped bracket I5 having a pivotal connection While this type of electric light has beenespeto the h l2 as wn n o w i h a li e m y cially designed for makinginterior inspections of be connected for suspending the light in a tank,15

oil tanks and tank cars, it is of general utility for tank car, orsimilar location. use in the presence of an explosive gas. What I claim.is:

With the above and other objects in View, 1. In combination, asupporting plate, a globe the invention has particular relation tocertain OC t 0 t p a a e t light globe n e novel features ofconstruction, arrangement of oc t, a h d o ke 1 the p ate, a tre u d 20parts, and use, an example of which is given in Sh e d a d and pa frOmthe globe and this specification and illustrated in the accomew i t t eShield S t d forming a panying drawing, wherein: tight compartment forthe globe, electrical wir- Figure 1 shows a sectional view of the guard,ing Connected to the globe Socket. and a o and having a marginal flangefitted against the plate 25 Figure 2 shows a front elevation, andenclosing the connections, said hood forming In the drawing the numeralI designates a gas tight joints w th plate d w n to f rm socket platecarrying the conventional type of a g tight amber for the electricalconnecsocket 2 to receive the electric light globe 3 in the tions, a uad a ound the shield, one end of which usual manner. Electric wiring 4 isconnected to has an internal flange fitted a t the p ate 30 the socketin the usual way for the supply of the and Securing means passingthrough Said fl ge current to the globe. and plate.

A translucid shield 5 surrounds the globe 3 In combination, an attachingp a So et and is screwed into the internally threaded socket thereon, nelectric light globe in t cket, elec- 6 of the plate I, thus forming agas-tight shield trio wiring connected to the socket, a translucid aboutthe globe. shield around the globe and detachably secured There is aforwardly flared guard I whose outer the plate and m ng a gas-tight c mpend upports skeleton 8 which is detachably ment in which the globe islocated, a hood on secured to the f wa d end f the guard 1 by theopposite side of the plate from the globe and 40 suitable Set Screws as9 or by other Suitable whose margin is outturned and fitted against the40 The other end of the guard 1 has the plate and forms a gas-tightjoint therewith, said inwardly turned flange H] which surrounds the hbemg applioxlmately cone'shaped and socket 6 and is bolted to the marginof the plate t sleeve at Its apex through WhiFh the Wirby means of staisstate ts .5

e n e wiring an ormin on the opposlfte Side of the plate I m gas-tightjoints with the sleeve and Wiring 3 guard 1, there is a hood l2 whosemargin is guard having an intumed annul fl clamped to the margin of saidplate by the bolts ar ange at one l This hood I f m end fitted againstthe plate and whose other end 15 Pre era Y D and is flared, said guardsurrounding the shield and at its apex has a sleeve l3 through which thewirsecuring bolts through the flanges and plate. 50

mg 4 passes, and a stufling box I4 is secured in RUDOLPH A. FENZL.

